CN115844410A - Corneal electrode sheet with suction cup structure for ocular electrophysiology and method for manufacturing the same - Google Patents
Corneal electrode sheet with suction cup structure for ocular electrophysiology and method for manufacturing the same Download PDFInfo
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- CN115844410A CN115844410A CN202211565584.8A CN202211565584A CN115844410A CN 115844410 A CN115844410 A CN 115844410A CN 202211565584 A CN202211565584 A CN 202211565584A CN 115844410 A CN115844410 A CN 115844410A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000002001 electrophysiology Methods 0.000 title claims abstract description 21
- 230000007831 electrophysiology Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 15
- 239000004033 plastic Substances 0.000 claims abstract description 80
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000741 silica gel Substances 0.000 claims abstract description 57
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 57
- 210000004087 cornea Anatomy 0.000 claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 18
- 238000001746 injection moulding Methods 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 10
- 238000007747 plating Methods 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 12
- 210000001747 pupil Anatomy 0.000 abstract description 11
- 239000007779 soft material Substances 0.000 abstract description 5
- 210000000744 eyelid Anatomy 0.000 description 5
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- 238000002571 electroretinography Methods 0.000 description 3
- 210000001508 eye Anatomy 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
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- 239000007924 injection Substances 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- 229920002379 silicone rubber Polymers 0.000 description 2
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- 238000004073 vulcanization Methods 0.000 description 2
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- 239000004831 Hot glue Substances 0.000 description 1
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- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
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Abstract
The invention discloses a cornea electrode slice with a sucker structure for ocular electrophysiology and a manufacturing method thereof, and the technical scheme is characterized in that a contact lens of the cornea electrode slice is processed by plastic and silica gel, the outer ring is made of silica gel and the inner ring is made of plastic; the plastic inner ring is provided with a first through hole, the conductive coil is attached to the inner side of the plastic inner ring, and the lead penetrates through the first through hole and is connected with the conductive coil. The contact lens is composed of two parts made of different materials, and the plastic inner ring close to the pupil is made of a hard material, so that the conductive coil can be better fixed; the outer ring of the silica gel far away from the pupil is made of soft materials, so that the contact force between the contact lens and the ocular surface is increased, and the contact stability between the contact lens and the cornea is improved.
Description
Technical Field
The present invention relates to a corneal electrode sheet, and more particularly, to a corneal electrode sheet with a suction cup structure for ocular electrophysiology and a method for manufacturing the same.
Background
Electroretinography (ERG) is a technique of visual electrophysiological examination to detect bioelectric signals generated during the visual generation of a patient and analyze the bioelectric signals generated. By observing the functional states of the eyes under different conditions in the waveform characteristics of the electric signals, the disease symptoms can be effectively diagnosed. In ophthalmic diagnostics, electroretinography is the only objective diagnostic method that does not require subject response, and is suitable not only for general patients, but also for patients who cannot undergo psychophysical examination. Corneal contact electrodes are an important component in electroretinography.
Chinese patent CN2626430Y discloses a visual electrophysiological corneal contact lens electrode, which comprises a contact lens with an inner side surface contacting with a cornea, wherein two eye-speculum ears are arranged on the outer surface of the contact lens, and an annular gold-plated film is not arranged on the corneal contact surface of the contact lens; the middle light-transmitting part of the contact lens has diopter; a hole is arranged on one eyelid opening ear, a lead is inserted into the hole, and the end of the lead is connected with the annular gold-plated ring to form an action electrode; and a strip-shaped gold-plated film is arranged on the other eyelid opening ear, and a lead-out wire is connected to the strip-shaped gold-plated film to form a reference electrode. The patent is a hard cornea contact electrode, and the cornea contact electrode is easy to fall off or be embedded into the eyelid fornix for a subject with loose eyelid skin; for subjects with traumatic eyelid swelling, the corneal contact electrode is difficult to secure; in addition, the cornea contact electrode is easy to fall off due to frequent and instantaneous eyes of the examinee, and the examinee is not easy to perceive the lens to fall off after the surface of the eyeball is anesthetized, so that the accuracy of the monitoring result is reduced.
In view of the above, the present invention is directed to a corneal electrode plate with a suction cup structure for ocular electrophysiology, which improves the structure of a contact lens to improve the contact stability with the cornea.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a cornea electrode plate with a sucker structure for ocular electrophysiology and a manufacturing method thereof, and the cornea electrode plate is characterized in that a contact lens consists of two parts with different materials, and a plastic inner ring close to a pupil is made of a hard material, so that a conductive coil can be better fixed; the outer ring of the silica gel far away from the pupil is made of soft materials, so that the contact force between the contact lens and the ocular surface is increased, and the contact stability between the contact lens and the cornea is improved.
In order to realize the purpose, the invention provides the following technical scheme:
a method for manufacturing a cornea electrode plate with a sucker structure for ocular electrophysiology comprises the following steps:
s1, injection molding of a contact lens: the contact lens comprises a plastic inner ring and a silica gel outer ring, the silica gel outer ring is connected with the plastic inner ring, and a first through hole is formed in the plastic inner ring; firstly, injecting plastic into a one-step formed mould to form a plastic inner ring, wherein the one-step formed mould is provided with a hole column for processing a first through hole; then taking out the plastic inner ring and putting the plastic inner ring into a secondary molding die, injecting silica gel into the secondary molding die, and processing a silica gel outer ring; vulcanizing the contact lens after the silica gel outer ring is formed;
s2, processing the conductive coil, enabling the lead to penetrate through the first through hole, and then welding the lead and the conductive coil together;
s3, the conductive coil is hot-pressed to the inner side of the plastic inner ring.
The invention is further configured to: in the step S1, when the silica gel is injected, the silica gel covers the outer side of the plastic inner ring.
The invention is further configured to: a groove is preset in the inner side of the silica gel inner ring, and the first through hole is communicated with the groove;
a filling block for processing a groove is arranged on the one-step forming die in the step S1;
and (4) embedding the conductive coil in the groove in a hot pressing manner in the step (S3).
The invention is further configured to: and after the step S3 is finished, the inner side surfaces of the conductive coil, the plastic inner ring and the silica gel outer ring are smoothly connected into a curved surface.
The invention is further configured to: and in the step S1, both the plastic and the silica gel are subjected to low-pressure injection molding.
The invention is further configured to: the conductive coil processed in the step S2 is a gold-plated coil.
The invention is further configured to: the gold plating layer of the gold-plated coil is processed in a water plating mode.
The invention provides a cornea electrode plate with a sucker structure for ocular electrophysiology, which is processed and manufactured by the manufacturing method.
In addition to the above manufacturing method, the present invention also provides a manufacturing method of a corneal electrode plate with a suction cup structure for ocular electrophysiology, which comprises the following specific steps:
s1, injection molding of a contact lens and a protective column: the contact lens comprises a plastic inner ring, a silica gel outer ring and a protective column, wherein the silica gel outer ring is connected with the plastic inner ring, and a first through hole is formed in the plastic inner ring; the protective column is fixed on the outer side of the plastic inner ring, a second through hole for accommodating a lead is formed in the protective column, and the first through hole is communicated with the second through hole;
firstly, injecting plastic into a one-step molding die to form a plastic inner ring and a protection column, wherein the one-step molding die is provided with a hole column for processing a first through hole and a second through hole; then taking out the plastic inner ring and the protective column which are connected into a whole, putting the plastic inner ring and the protective column into a secondary forming die, injecting silica gel into the secondary forming die, and processing a silica gel outer ring; vulcanizing the contact lens and the protective column after the silica gel outer ring is formed;
s2, processing the conductive coil, enabling the lead to penetrate through the first through hole, and then welding the lead and the conductive coil together;
s3, the conductive coil is hot-pressed to the inner side of the plastic inner ring.
The invention also provides a cornea electrode plate with a sucker structure for ocular electrophysiology, which is processed by the second manufacturing method.
In summary, compared with the prior art, the invention has the following beneficial effects: the contact lens is composed of two parts with different materials, and the plastic inner ring close to the pupil is made of a hard material, so that the conductive coil can be better fixed; the outer ring of the silica gel far away from the pupil is made of soft materials, so that the contact force between the contact lens and the ocular surface is increased, and the contact stability between the contact lens and the cornea is improved. The manufacturing method of the cornea electrode plate is low in cost.
Drawings
FIG. 1 is an isometric view of a corneal electrode patch in an example;
FIG. 2 is a bottom view of the corneal electrode pad of the example;
FIG. 3 is a bottom view embodying a first through hole;
FIG. 4 is a top view embodying a second via;
FIG. 5 is a cross-sectional view embodying grooves;
in the figure: 1. a contact lens; 11. a silica gel outer ring; 12. a plastic inner ring; 121. a first through hole; 122. a groove; 123. a joining groove; 2. a conductive coil; 3. a wire; 4. a guard post; 41. a second via.
Detailed Description
The technical solutions of the present invention will be clearly described below with reference to the accompanying drawings, and it is obvious that the described embodiments are not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work belong to the protection scope of the present invention.
It is to be understood that the terms "center," "upper," "lower," "horizontal," "left," "right," "front," "rear," "lateral," "longitudinal," and the like are used in the illustrated orientation or positional relationship as shown in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
Examples
As shown in fig. 1-5, the basic structure of a cornea electrode plate with a suction cup structure for ocular electrophysiology in the preferred embodiment of the present invention includes a contact lens 1, a conductive coil 2 and a conducting wire 3, wherein the contact lens 1 includes a plastic inner ring 12 and a silica gel outer ring 11, and the silica gel outer ring 11 is connected to the plastic inner ring 12; the plastic inner ring 12 is provided with a first through hole 121, the conductive coil 2 is attached to the inner side of the plastic inner ring 12, and the lead 3 penetrates through the first through hole 121 and is connected with the conductive coil 2. In the embodiment, the contact lens 1 consists of two parts with different materials, and the plastic inner ring 12 close to the pupil is made of hard material, so that the conductive coil 2 can be better fixed; the silica gel outer ring 11 far away from the pupil is made of soft materials, so that the contact force between the contact lens 1 and the ocular surface is increased, and the contact stability between the contact lens 1 and the cornea is improved.
Moreover, because the plastic inner ring 12 is annular, the pupil can be exposed from the hole in the middle of the plastic inner ring 12, and the hollow design of the plastic inner ring 12 can effectively reduce the visual shielding of the plastic inner ring 12 in the test process, and reduce the possibility of image loss or signal capturing fall in the test process.
Specifically, a groove 122 is formed in the inner side of the silica gel inner ring, the conductive coil 2 is embedded in the groove 122, and the first through hole 121 is communicated with the groove 122. The arrangement of the groove 122 can increase the contact area between the plastic inner ring 12 and the conductive coil 2, so that the conductive coil 2 is more firmly fixed on the plastic inner ring 12.
Specifically, the inner side surfaces of the conductive coil 2, the plastic inner ring 12 and the silica gel outer ring 11 are smoothly connected to form a curved surface, so that the conductive coil 2, the plastic inner ring 12 and the silica gel outer ring 11 can be attached to an eye surface.
The embodiment further comprises a protection column 4, the protection column 4 is fixed on the outer side of the plastic inner ring 12, a second through hole 41 for accommodating the lead 3 is formed in the protection column 4, and the first through hole 121 is communicated with the second through hole 41. The guard post 4 can help fix the position of the lead 3 and improve the stability of the connection part of the lead 3 and the conductive coil 2.
The manufacturing steps of the cornea electrode plate in the embodiment are as follows:
s1, injection molding of the contact lens 1 and a protective column 4: firstly, plastic is injected into a one-step forming die to form a plastic inner ring 12 and a protection column 4, the one-step forming die is provided with a hole column for processing a first through hole 121 and a second through hole 41 and a filling block for processing a groove, and after one-step forming is completed, the structures of the first through hole 121, the groove 122, the second through hole 41 and the like are processed. Then taking out the plastic inner ring 12 and the protective column 4 which are connected into a whole and putting the plastic inner ring and the protective column into a secondary forming die, injecting silica gel into the secondary forming die, and processing a silica gel outer ring 11; and vulcanizing the contact lens 1 and the protective column 4 after the silica gel outer ring 11 is formed.
And S2, processing the conductive coil 2, enabling the lead 3 to pass through the first through hole 121, and welding the lead 3 and the conductive coil 2 together in a spot welding mode.
And S3, hot-pressing the conductive coil 2 into the groove 122 on the inner side of the plastic inner ring 12.
Specifically, in step S1, when the silica gel is injected, the silica gel covers the outer sides of the plastic inner ring 12 and the guard post 4, the plastic inner ring 12 and the guard post 4 can be completely covered by the silica gel, and the silica gel can only cover the outer side edge of the plastic inner ring 12. In this embodiment, the silicone rubber only covers the outer edge of the plastic inner ring 12. The arrangement can increase the contact area between the silica gel outer ring 11 and the plastic inner ring 12 and between the silica gel outer ring 11 and the protective column 4, so that the silica gel outer ring 11 and the plastic inner ring 12 can be firmly combined together.
Specifically, the outside border of plastic inner circle 12 in this embodiment is processed with and links up groove 123, the inboard border embedding of silica gel outer lane 11 links up in groove 123 to increase plastic inner circle 12 and further increase the steadiness of being connected between silica gel outer lane 11 and the plastic inner circle 12. In this embodiment, after the step S1 is completed, the outer silicone ring 11 is smoothly connected to the outer side surface of the plastic inner ring 12.
More specifically, the silicone rubber and the plastic rubber in this embodiment are both formed by low pressure injection molding. Low pressure injection molding is a systematic packaging process method which injects hot melt material into a mold at very low injection pressure (1.5-40 bar) and rapidly solidifies and molds (5-50 seconds). The use of low pressure injection molding in the manufacture of corneal electrode pads has two advantages. The method has the advantages that the curing time is short, and even if the secondary injection molding process is adopted in the embodiment, the whole curing time can be completed only by a few minutes. The low-pressure injection molding machine has the advantages of being low in cost, simple in low-pressure injection molding equipment system, simple in structure and low in unit price, and only consists of the hot melt adhesive machine, the work console and the mold.
In the plastic injection molding of the embodiment, the mold temperature is 60 ℃, the injection molding time is 30 seconds, the injection molding pressure is 0.15Bar, and the pressure is maintained for 10 seconds. When the silica gel is injected, the mold temperature is 120 ℃, and the injection pressure is 0.16Bar. After the silica gel is injected, the contact lens 1 and the protective column 4 are directly kept at the mold temperature of 120 ℃ in injection molding equipment for vulcanization, and the vulcanization time is 100 seconds.
Specifically, the conductive coil 2 is a gold-plated coil, and the gold plating can improve the conductivity of the coil so as to better transmit an electric signal and achieve a better test effect. The gold-plated coil in this embodiment is a copper gold-plated coil.
Specifically, the gold plating layer of the gold-plated coil is processed in a water plating mode, and the water plating has the advantages that the plating layer is not covered but forms an alloy with the base material through chemical bonding, the bonding strength is greatly improved, and the water plating cost is lower than that of conventional electroplating.
In summary, the contact lens 1 in the embodiment is composed of two parts made of different materials, and the plastic inner ring 12 close to the pupil is made of a hard material, so that the conductive coil 2 can be better fixed; the silica gel outer ring 11 far away from the pupil is made of soft materials, so that the contact force between the contact lens 1 and the ocular surface is increased, and the contact stability between the contact lens 1 and the cornea is improved. The manufacturing method of the cornea electrode plate is low in cost.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A manufacturing method of a cornea electrode plate with a sucker structure for ocular electrophysiology is characterized by comprising the following specific steps:
s1, injection molding of a contact lens (1): the contact lens (1) comprises a plastic inner ring (12) and a silica gel outer ring (11), the silica gel outer ring (11) is connected with the plastic inner ring (12), and a first through hole (121) is formed in the plastic inner ring (12); firstly, injecting plastic into a one-step molding die to form a plastic inner ring (12), wherein the one-step molding die is provided with a hole column for processing a first through hole (121); then taking out the plastic inner ring (12), putting the plastic inner ring into a secondary molding die, injecting silica gel into the secondary molding die, and processing a silica gel outer ring (11); vulcanizing the contact lens (1) after the silica gel outer ring (11) is formed;
s2, processing the conductive coil (2), enabling the lead (3) to penetrate through the first through hole (121), and then welding the lead (3) and the conductive coil (2) together;
s3, the conductive coil (2) is hot-pressed to the inner side of the plastic inner ring (12).
2. The method for manufacturing a corneal electrode sheet with a suction cup structure for ocular electrophysiology according to claim 1, wherein: in the step S1, when the silica gel is injected, the silica gel is coated on the outer side of the plastic inner ring (12).
3. The method for manufacturing a corneal electrode sheet with a suction cup structure for ocular electrophysiology according to claim 1, comprising: a groove (122) is preset in the inner side of the silica gel inner ring, and the first through hole (121) is communicated with the groove (122);
a filling block for processing the groove (122) is arranged on the one-step forming die in the step S1;
and the conductive coil (2) in the step S3 is embedded into the groove (122) in a hot-pressing mode.
4. The method for manufacturing a corneal electrode sheet with a suction cup structure for ocular electrophysiology according to claim 3, comprising: and after the step S3 is finished, the inner side surfaces of the conductive coil (2), the plastic inner ring (12) and the silica gel outer ring (11) are smoothly connected to form a curved surface.
5. The method for manufacturing a corneal electrode sheet with a suction cup structure for ocular electrophysiology according to any one of claims 1 to 3, wherein: and in the step S1, both the plastic and the silica gel are subjected to low-pressure injection molding.
6. The method for manufacturing a corneal electrode sheet with a suction cup structure for ocular electrophysiology according to any one of claims 1 to 3, wherein: the conductive coil (2) processed in the step S2 is a gold-plated coil.
7. The method for manufacturing a corneal electrode sheet with a suction cup structure for ocular electrophysiology according to claim 6, wherein: the gold plating layer of the gold-plated coil is processed in a water plating mode.
8. A manufacturing method of a cornea electrode plate with a sucker structure for ocular electrophysiology is characterized by comprising the following specific steps:
s1, injection molding of the contact lens (1) and a protective column (4): the contact lens (1) comprises a plastic inner ring (12), a silica gel outer ring (11) and a protective column (4), wherein the silica gel outer ring (11) is connected with the plastic inner ring (12), and a first through hole (121) is formed in the plastic inner ring (12); the protective column (4) is fixed on the outer side of the plastic inner ring (12), a second through hole (41) for accommodating the lead (3) is formed in the protective column (4), and the first through hole (121) is communicated with the second through hole (41);
firstly, injecting plastic into a one-step molding die to form a plastic inner ring (12) and a protection column (4), wherein the one-step molding die is provided with a hole column for processing a first through hole (121) and a second through hole (41); then taking out the plastic inner ring (12) and the protective column (4) which are connected into a whole, placing the plastic inner ring and the protective column into a secondary forming die, injecting silica gel into the secondary forming die, and processing a silica gel outer ring (11); vulcanizing the contact lens (1) and the protective column (4) after the silica gel outer ring (11) is formed;
s2, processing the conductive coil (2), enabling the lead (3) to penetrate through the first through hole (121), and then welding the lead (3) and the conductive coil (2) together;
s3, the conductive coil (2) is hot-pressed to the inner side of the plastic inner ring (12).
9. A cornea electrode plate with a sucking disc structure for eye electrophysiology is characterized in that: manufactured by the manufacturing method according to any one of claims 1 to 7.
10. A cornea electrode plate with a sucking disc structure for eye electrophysiology is characterized in that: manufactured by the manufacturing method as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211565584.8A CN115844410A (en) | 2022-12-07 | 2022-12-07 | Corneal electrode sheet with suction cup structure for ocular electrophysiology and method for manufacturing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211565584.8A CN115844410A (en) | 2022-12-07 | 2022-12-07 | Corneal electrode sheet with suction cup structure for ocular electrophysiology and method for manufacturing the same |
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| CN115844410A true CN115844410A (en) | 2023-03-28 |
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| US20140240665A1 (en) * | 2013-02-28 | 2014-08-28 | Johnson & Johnson Vision Care, Inc. | Electronic ophthalmic lens with rear-facing pupil diameter sensor |
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| WO2019052239A1 (en) * | 2017-09-12 | 2019-03-21 | 深圳麦格米特电气股份有限公司 | Active electrode detection device for electroretinogram and electro-oculogram |
| CN208876529U (en) * | 2018-02-08 | 2019-05-21 | 李东辉 | Cornea contact electrode fixes device |
| CN112384126A (en) * | 2018-07-06 | 2021-02-19 | 森思迈德股份公司 | Tonometry and/or monitoring device |
| CN219166425U (en) * | 2022-12-07 | 2023-06-13 | 爱尔眼科医院集团四川眼科医院有限公司 | Cornea electrode plate with sucking disc structure for electro-physiological use |
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2022
- 2022-12-07 CN CN202211565584.8A patent/CN115844410A/en active Pending
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|---|---|---|---|---|
| US4386831A (en) * | 1980-03-14 | 1983-06-07 | Grounauer Pierre Alain | Device for the measurement of electrical potentials of the eye |
| CN2075501U (en) * | 1990-09-28 | 1991-04-24 | 中国人民解放军白求恩国际和平医院 | Retina electric graph recording electrode |
| FR2713913A1 (en) * | 1993-12-21 | 1995-06-23 | Dencott Lab Sa | Electroretinography shell and its prodn. |
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